| Brand | Vorel |
| Entity responsible for this product in the EU | TOYA S.A.More |
| Series | GRF |
| Alternating voltage | 0-500 V a.c. |
| Direct voltage | 0-500 V d.c. |
| Direct current | 0-5 A |
| Resistance | 0-2 MΩ |
| Transistor HFE measurement | PNP, NPN |
| Diode test | yes |
| Material | ABS |
| Bell ring | no |
| Application | electric |
| Symbol | 81780 |
Universal meter 81780 with manual range for each measurement allows for basic electrical measurements.
Basic measurements:
- measurement of alternating voltage: A.C. 0-500 V
- measurement of direct voltage: D.C. 0-500 V
- measurement of direct current intensity: D.C. 0-5 A
- measurement of resistance: 0-2 MΩ
- diode test: IF 1 mA, UR 1.5 V
Additional measurements:
- transistor hFe test: 0-1000, built-in measuring socket
Measurement accuracy:
Example of determining accuracy for measuring alternating current voltage AC. Calculations for the measurement result: 235 V
- meter 81780 accuracy for this range is: ±(1.2% + 10), resolution 1 V
- measurement error calculation formula: (measurement result x 2%) + 10 x resolution
- calculations: (235 x 1.2%) + 10 x 1 = 2.82 + 10 = 12.82 V
Result with measurement error for indication 235 V = 235 ± 12.82 V*
- result with measurement error for indication of direct voltage measurement: 12 V = 12 ± 0.08 V
Table with resolution and accuracy for a given measurement can be found in the user manual.
*Meter 81780 does not have true rms measurement function, so the above result is accurate only for a correct sinusoidal waveform.
Additional information:
- LCD display, maximum displayed result: 1999
- measurement probes included
- construction with overload protection
- plastic housing
- low battery indicator
- power supply: 9 V battery (6F22)
Visual description:
Attention!
When measuring unknown values using a meter with manual range change using a dial, measurements should be performed sequentially from the largest range to the range that gives the most accurate result - otherwise, there is a risk of damaging the device.
Usage warnings:
The offered meter is not a measuring instrument within the meaning of the "Law on Measures".
